[INFO] cloning repository https://github.com/tvolk131/sudoku_solver [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tvolk131/sudoku_solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftvolk131%2Fsudoku_solver", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftvolk131%2Fsudoku_solver'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ff57a004761f3729545ff9082df12a2397b5835c [INFO] checking tvolk131/sudoku_solver against master#5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea for pr-124336-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftvolk131%2Fsudoku_solver" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/tvolk131/sudoku_solver on toolchain 5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/tvolk131/sudoku_solver [INFO] finished tweaking git repo https://github.com/tvolk131/sudoku_solver [INFO] tweaked toml for git repo https://github.com/tvolk131/sudoku_solver written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/tvolk131/sudoku_solver already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6d1d0f6eb905694de87a17e2e5c8e7bbeb5e0c7b6b97336b925647d28b18a121 [INFO] running `Command { std: "docker" "start" "-a" "6d1d0f6eb905694de87a17e2e5c8e7bbeb5e0c7b6b97336b925647d28b18a121", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6d1d0f6eb905694de87a17e2e5c8e7bbeb5e0c7b6b97336b925647d28b18a121", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6d1d0f6eb905694de87a17e2e5c8e7bbeb5e0c7b6b97336b925647d28b18a121", kill_on_drop: false }` [INFO] [stdout] 6d1d0f6eb905694de87a17e2e5c8e7bbeb5e0c7b6b97336b925647d28b18a121 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4080e70f5797d7aa341d1b7c3cc3751b39c757da40613623ea5ae2753fc8afcc [INFO] running `Command { std: "docker" "start" "-a" "4080e70f5797d7aa341d1b7c3cc3751b39c757da40613623ea5ae2753fc8afcc", kill_on_drop: false }` [INFO] [stderr] Checking sudoku_solver v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/puzzle.rs:235:21 [INFO] [stdout] | [INFO] [stdout] 235 | for i in 0..self.get_width() + self.get_block_width() { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/puzzle.rs:258:13 [INFO] [stdout] | [INFO] [stdout] 258 | for i in 0..self.get_width() + 2 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get_column` is never used [INFO] [stdout] --> src/puzzle.rs:187:12 [INFO] [stdout] | [INFO] [stdout] 5 | impl SudokuPuzzle { [INFO] [stdout] | ----------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 187 | pub fn get_column(&self, mut column_index: usize) -> Vec<&SudokuPuzzleCell> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get_block_column` is never used [INFO] [stdout] --> src/puzzle.rs:341:8 [INFO] [stdout] | [INFO] [stdout] 271 | impl SudokuPuzzleBlock { [INFO] [stdout] | ---------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 341 | fn get_block_column(&self, column_index: usize) -> Vec<&SudokuPuzzleCell> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `get_expert_puzzle_1` is never used [INFO] [stdout] --> src/sample_puzzles.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn get_expert_puzzle_1() -> SudokuPuzzle { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `get_insane_puzzle_1` is never used [INFO] [stdout] --> src/sample_puzzles.rs:31:8 [INFO] [stdout] | [INFO] [stdout] 31 | pub fn get_insane_puzzle_1() -> SudokuPuzzle { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/puzzle.rs:136:34 [INFO] [stdout] | [INFO] [stdout] 136 | for horizontal_blocks in self.block_rows.get_mut(block_index) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(for_loops_over_fallibles)]` on by default [INFO] [stdout] help: to check pattern in a loop use `while let` [INFO] [stdout] | [INFO] [stdout] 136 | while let Some(horizontal_blocks) = self.block_rows.get_mut(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 136 | if let Some(horizontal_blocks) = self.block_rows.get_mut(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/puzzle.rs:157:34 [INFO] [stdout] | [INFO] [stdout] 157 | for horizontal_blocks in self.block_rows.get(block_index) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: to check pattern in a loop use `while let` [INFO] [stdout] | [INFO] [stdout] 157 | while let Some(horizontal_blocks) = self.block_rows.get(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 157 | if let Some(horizontal_blocks) = self.block_rows.get(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/puzzle.rs:235:21 [INFO] [stdout] | [INFO] [stdout] 235 | for i in 0..self.get_width() + self.get_block_width() { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/puzzle.rs:258:13 [INFO] [stdout] | [INFO] [stdout] 258 | for i in 0..self.get_width() + 2 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get_column` is never used [INFO] [stdout] --> src/puzzle.rs:187:12 [INFO] [stdout] | [INFO] [stdout] 5 | impl SudokuPuzzle { [INFO] [stdout] | ----------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 187 | pub fn get_column(&self, mut column_index: usize) -> Vec<&SudokuPuzzleCell> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get_block_column` is never used [INFO] [stdout] --> src/puzzle.rs:341:8 [INFO] [stdout] | [INFO] [stdout] 271 | impl SudokuPuzzleBlock { [INFO] [stdout] | ---------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 341 | fn get_block_column(&self, column_index: usize) -> Vec<&SudokuPuzzleCell> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `get_expert_puzzle_1` is never used [INFO] [stdout] --> src/sample_puzzles.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn get_expert_puzzle_1() -> SudokuPuzzle { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `get_insane_puzzle_1` is never used [INFO] [stdout] --> src/sample_puzzles.rs:31:8 [INFO] [stdout] | [INFO] [stdout] 31 | pub fn get_insane_puzzle_1() -> SudokuPuzzle { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/puzzle.rs:136:34 [INFO] [stdout] | [INFO] [stdout] 136 | for horizontal_blocks in self.block_rows.get_mut(block_index) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(for_loops_over_fallibles)]` on by default [INFO] [stdout] help: to check pattern in a loop use `while let` [INFO] [stdout] | [INFO] [stdout] 136 | while let Some(horizontal_blocks) = self.block_rows.get_mut(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 136 | if let Some(horizontal_blocks) = self.block_rows.get_mut(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/puzzle.rs:157:34 [INFO] [stdout] | [INFO] [stdout] 157 | for horizontal_blocks in self.block_rows.get(block_index) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: to check pattern in a loop use `while let` [INFO] [stdout] | [INFO] [stdout] 157 | while let Some(horizontal_blocks) = self.block_rows.get(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 157 | if let Some(horizontal_blocks) = self.block_rows.get(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s [INFO] running `Command { std: "docker" "inspect" "4080e70f5797d7aa341d1b7c3cc3751b39c757da40613623ea5ae2753fc8afcc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4080e70f5797d7aa341d1b7c3cc3751b39c757da40613623ea5ae2753fc8afcc", kill_on_drop: false }` [INFO] [stdout] 4080e70f5797d7aa341d1b7c3cc3751b39c757da40613623ea5ae2753fc8afcc